Severe Thunderstorm Warning 2, NWS Salt Lake City, UT

000 
WWUS55 KSLC 060006
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
604 PM MDT THU MAY 5 2005

UTC003-011-029-057-060015-
/O.CON.KSLC.SV.W.0002.000000T0000Z-050506T0015Z/
MORGAN UT-DAVIS UT-WEBER UT-BOX ELDER UT-
604 PM MDT THU MAY 5 2005

...A SEVERE THUNDERSTORM WARNING CONTINUES UNTIL 615 PM MDT FOR BOX
ELDER...WESTERN WEBER...NORTHERN DAVIS AND WEST CENTRAL MORGAN
COUNTIES...

AT 554 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS IN EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM 6 MILES SOUTH OF ETNA TO 16 MILES NORTH OF LAKESIDE TO
NORTH OGDEN...OR ALONG A LINE EXTENDING FROM 58 MILES NORTH OF
WENDOVER TO 37 MILES SOUTH OF SNOWVILLE TO OGDEN...MOVING NORTH AT 25
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
WILLARD...YOST...TREMONTON...THATCHER...STANDROD...SNOWVILLE...
ROSETTE...RIVERSIDE...PROMONTORY...PORTAGE...PLYMOUTH...PERRY...
PENROSE...PARK VLY...LYNN...HOWELL...HONEYVILLE...GROUSE CR...
GARLAND...FIELDING...ELWOOD...DEWEYVILLE...CURLEW JCT...CORINNE...
BRIGHAM CITY...BOTHWELL AND BEAR RIVER.

IN ADDITION TO DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING 
IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY LIGHTNING IS 
ONE OF NATURES NUMBER ONE KILLERS. REMEMBER...IF YOU CAN HEAR 
THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING.

LAT...LON 4120 11412 4110 11289 4095 11178 4197 11219
      4199 11286 4199 11399

$$

000 
WWUS55 KSLC 060018
SVSSLC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
616 PM MDT THU MAY 5 2005

UTC003-011-029-057-060026-
/O.EXP.KSLC.SV.W.0002.000000T0000Z-050506T0015Z/
MORGAN UT-DAVIS UT-WEBER UT-BOX ELDER UT-
616 PM MDT THU MAY 5 2005

...THE SEVERE THUNDERSTORM WARNING FOR BOX ELDER...WESTERN 
WEBER...NORTHERN DAVIS AND WEST CENTRAL MORGAN COUNTIES EXPIRES 
AT 615 PM MDT...

THE SEVERE THUNDERSTORM WARNING FOR BOX ELDER...WESTERN 
WEBER...NORTHERN DAVIS AND WEST CENTRAL MORGAN COUNTIES HAS EXPIRED. 
THE STORM RESPONSIBLE FOR THE WARNING HAS WEAKENED...THOUGH IT MAY 
STILL PRODUCE GUSTY WINDS UP TO 45 MPH...SMALL HAIL...AND BRIEF 
HEAVY RAIN.

LAT...LON 4120 11412 4110 11289 4095 11178 4197 11219
      4199 11286 4199 11399

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
435 PM MDT THU MAY 5 2005

.SYNOPSIS...A STRONG UPPER LEVEL LOW WILL MOVE ACROSS THE GREAT
BASIN AND INTO UTAH ON FRIDAY. THIS WILL RESULT IN A MOIST AND
UNSTABLE AIRMASS OVER THE AREA THROUGH SATURDAY.

&&

.DISCUSSION...UPPER LOW CONTINUES TO MOVE ONTO THE CALIFORNIA COAST
THIS AFTERNOON.  THE AIRMASS HAS BECOME QUITE UNSTABLE AS EXPECTED
WITH THUNDERSTORMS DEVELOPING OVER MOST OF THE CWA.  THE LOW LEVELS
STILL REMAIN RATHER DRY IN MANY PLACES THIS AFTERNOON WITH VERY
LITTLE PRECIPITATION REPORTED AT OBSERVATION SITES DESPITE THE HIGH
RADAR REFLECTIVITIES.  THE DEWPOINT DEPRESSION AT KSLC WAS STILL 17C
AROUND 21Z.  IN ADDITION...THESE STORMS ARE MOVING TOO FAST TO
PRODUCE ANY SIGNIFICANT RAIN IN ANY ONE LOCATION.  HAVE ONLY
RECEIVED A FEW SPOTTER REPORTS OF HEAVY RAIN WITH SMALL HAIL.  THE
STRONGER CELLS HAVE PRODUCED SOME GUSTY WINDS WITH MOST OF THE
STRONGER GUSTS AVERAGING IN THE 35-45KT RANGE.  PROVO REGISTERED A
GUST OF 62KT BUT IT APPEARS ISOLATED.  WOULD EXPECT THIS TREND OF
35-45KT GUSTS ALONG WITH SMALL HAIL TO CONTINUE THROUGH THE EVENING
NEAR THE STRONGER STORMS WITH PERHAPS A COUPLE OF ISOLATED SEVERE
STORMS.

THE AIRMASS REMAINS UNSTABLE TONIGHT AS THE LOW APPROACHES AND
PUSHES SOME MORE VORT LOBES ACROSS THE AREA...SO WOULD EXPECT
SHOWERS TO CONTINUE THROUGH THE NIGHT.  ANOTHER ACTIVE DAY WITH
WIDESPREAD SHOWERS AND THUNDERSTORMS IS IN STORE TOMORROW AS THE LOW
MOVES OVER UTAH.  THE STORMS SHOULD GENERALLY PRODUCE MORE RAIN AS
THE AIRMASS SHOULD HAVE MOISTENED A BIT MORE BY TOMORROW.  SLIGHT
DIFFERENCES EXIST BETWEEN THE NAM AND THE GFS ON THE POSITION OF THE
LOW CENTER TOMORROW.  THE GFS DIGS A LITTLE DEEPER SO THAT BY 00Z
SATURDAY THE LOW CENTER IS OVER SOUTH CENTRAL UTAH.  MEANWHILE THE
ETA POSITIONS THE LOW CENTER NEAR WENDOVER AT THE SAME TIME.  THE
GFS IS ALSO QUICKER ON THE 700MB WIND SHIFT.  THIS LOW LEVEL
CONVERGENCE AND RESULTING DIVERGENCE ALOFT HAS PRODUCED A QPF
BULLSEYE OVER THE WASATCH FRONT AREA AND NEARBY MOUNTAINS TOMORROW
DURING THE DAY AND EVENING HOURS.  THE NAM PRODUCES GREATER QPF OVER
SOUTHERN AND EASTERN UTAH.

THE LOW MOVES INTO WYOMING ON SATURDAY BUT THE AIRMASS STILL REMAINS
FAIRLY MOIST AND UNSTABLE IN WESTERLY TO NORTHWESTERLY FLOW ALOFT.
PRECIP WILL BE FOCUSED MORE UP NORTH WHERE THE BRUNT OF THE MOISTURE
REMAINS WITH THINGS TAPERING OFF IN THE SOUTHWEST.  A SHORTWAVE
RIDGE IS STILL PROGGED FOR SUNDAY BUT THERE MAY BE ENOUGH LINGERING
MOISTURE TO ALLOW A FEW THUNDERSTORMS TO POP UP.  THE NEXT LOW MOVES
INTO THE AREA MONDAY.  MUCH LIKE THE CURRENT STORM...THIS STORM ALSO
TAKES THE LOW CENTER ACROSS UTAH.  HOWEVER THIS STORM IS A BIT
COLDER AND TAKES A BAROCLINIC ZONE ACROSS THE AREA MONDAY
NIGHT/TUESDAY MORNING.  THIS STORM WILL IMPACT THE AREA THROUGH AT
LEAST THE MIDDLE OF NEXT WEEK.

&&

.HYDRO...SHOWER ACTIVITY COMBINED WITH SNOWMELT WILL RESULT IN
INCREASED FLOWS ON AREA RIVERS AND STREAMS THROUGH SATURDAY NIGHT.
EVEN WITH SNOW LEVELS LOWERING TO NEAR 8000FT ON FRIDAY AND 7000FT
SATURDAY...HEAVY RAINFALL ON SOME OF THE DRAINAGES COULD RESULT IN
FLOODING.  AS A RESULT THE FLOOD WATCH HAS BEEN CONTINUED.  SEE
SLCFFASLC FOR DETAILS.

&&

.AVIATION...THUNDERSTORMS POPPING UP IN UNSTABLE AIRMASS AROUND SLC.
THUNDERSTORM WIND GUSTS TO 50 MPH POSSIBLE. EXPECT STRONGEST
ACTIVITY TO LAST THROUGH 03Z...WITH LESS CONVECTION OVERNIGHT.
EXPECT LOWERING CEILINGS AND VISIBILITIES FRIDAY AFTER 18Z WITH RAIN
AND EMBEDDED THUNDERSTORMS DEVELOPING.

&&

.SLC WATCHES/WARNINGS/ADVISORIES...
UT...FLOOD WATCH TONIGHT THROUGH SATURDAY NIGHT.
     SEE SLCFFASLC FOR DETAILS.
WY...NONE.

CHENG/SMITH

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
500 AM MDT THU MAY 5 2005

UTZ001>021-WYZ021-061300-
CACHE VALLEY/UTAH PORTION-CASTLE COUNTRY-
CENTRAL AND SOUTHWEST MOUNTAINS-
GLEN CANYON RECREATION AREA/LAKE POWELL-
GREAT SALT LAKE DESERT AND MOUNTAINS-HENRY MOUNTAINS-
NORTHERN WASATCH FRONT-SALT LAKE AND TOOELE VALLEYS-SAN RAFAEL SWELL-
SANPETE/SEVIER VALLEYS-SOUTH CENTRAL UTAH-SOUTHERN WASATCH FRONT-
SOUTHWEST UTAH-SOUTHWEST WYOMING-UTAHS DIXIE AND ZION NATIONAL PARK-
WASATCH MOUNTAIN VALLEYS-WASATCH MOUNTAINS I-80 NORTH-
WASATCH MOUNTAINS SOUTH OF I-80-WASATCH PLATEAU/BOOK CLIFFS-
WEST CENTRAL UTAH-WESTERN UINTA BASIN-WESTERN UINTA MOUNTAINS-
500 AM MDT THU MAY 5 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WESTERN TWO-THIRDS OF
UTAH AND EXTREME SOUTHWEST WYOMING.

.DAY ONE... TODAY

SHOWERS AND THUNDERSTORMS WILL INCREASE IN COVERAGE TODAY. LOCALLY
HEAVY RAIN AND GUSTY WIND WILL OCCUR WITH THE STRONGER STORMS. BREEZY
TO WINDY CONDITIONS WILL OCCUR OVER WESTERN UTAH.

.DAYS TWO THROUGH SEVEN... FRIDAY THROUGH WEDNESDAY

A STRONG AND MOIST PACIFIC STORM SYSTEM WILL MOVE THROUGH THE REGION
FRIDAY AND LIFT INTO WYOMING ON SATURDAY. THIS WILL BRING SIGNIFICANT
RAINFALL AND NUMEROUS THUNDERSTORMS THROUGH THE PERIOD. SOME
THUNDERSTORMS WILL HAVE VERY HEAVY RAIN. ANY HEAVY RAINFALL COMBINED
WITH SNOWMELT WILL RESULT IN HIGH FLOWS ON AREA RIVERS AND STREAMS...
WITH THE POSSIBILITY OF FLOODING. THEREFORE...A FLOOD WATCH HAS BEEN
ISSUED FOR SOME RIVERS AND STREAMS IN UTAH. SEE SLCFFASLC FOR MORE
DETAILS.

SIGNIFICANT HIGH ELEVATION SNOW IS EXPECTED FRIDAY AND SATURDAY
ABOVE 8500 FEET.

ANOTHER STORM SYSTEM IS POSSIBLE MONDAY THROUGH WEDNESDAY AND
HAS THE POTENTIAL FOR SIGNIFICANT ADDITIONAL PRECIPITATION.

TUNE INTO NOAA WEATHER RADIO...WEATHER.GOV ON THE INTERNET...OR
YOUR FAVORITE MEDIA SOURCE FOR UPDATES ON THIS SPRING STORM.

AOT

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
310 PM MDT THU MAY 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0155 PM     TSTM WND GST     PROVO                   40.25N 111.64W
05/05/2005  71 MPH           UTAH               UT   AWOS

&&

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
428 PM MDT THU MAY 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     TSTM WND GST     N STANSBURY PARK        40.64N 112.30W
05/05/2005  0 MPH            TOOELE             UT   NWS EMPLOYEE

            THUNDERSTORM GUST TO 61MPH

0200 PM     HAIL             3 ESE AMERICAN FORK     40.37N 111.73W
05/05/2005  0.50 INCH        UTAH               UT   TRAINED SPOTTER

            1/2 TO 3/4 INCH HAIL

0200 PM     HAIL             PLEASANT GROVE          40.37N 111.73W
05/05/2005  0.50 INCH        UTAH               UT   TRAINED SPOTTER

            ESTIMATED 1/2 TO 3/4 INCH HAIL

&&

SMITH

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SALT LAKE CITY UT
428 PM MDT THU MAY 05 2005

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0350 PM     TSTM WND GST     N STANSBURY PARK        40.64N 112.30W
05/05/2005  61 MPH            TOOELE             UT   NWS EMPLOYEE

            THUNDERSTORM GUST TO 61MPH

0200 PM     HAIL             3 ESE AMERICAN FORK     40.37N 111.73W
05/05/2005  0.50 INCH        UTAH               UT   TRAINED SPOTTER

            1/2 TO 3/4 INCH HAIL

0200 PM     HAIL             PLEASANT GROVE          40.37N 111.73W
05/05/2005  0.50 INCH        UTAH               UT   TRAINED SPOTTER

            ESTIMATED 1/2 TO 3/4 INCH HAIL

&&

SMITH